Lock handle assembly



Aug. 9, 1949. s. B. McKENzlE 2,478,589

` Loox lHMIDLE ASSEMBLY Filed Aug. 22, 1945 f ZSheets-Sheet 1 onus V Aug9, 1949- s. B. MckENz'lE 2,478,589

LOCK HANDLE ASSEMBLY Filed Aug. 22, 1945 2 Sheets-Sheet 2 INVENTOR.

v5A EL BMCKENZ/'E ORNE'Y Patented Aug. 9, 1949 UNITED STATES APATENTOFFICE Loox HANDLE ASSEMBLY Samuel Bartlett McKenzie, Toronto, Ontario,Canada, assignorto Connector Locks (Amer ica), Inc., Detroit, Mich., acorporation of Dela- Waffe Application August 22,1945, serial No.612,048

The present invention relates to improved lock handle assemblies.

Pursuant to the instant invention, the lock handle assembly comprisesthe combination of resilient means such as a coil spring assembly Idimension provided in the spindle of the assembly, whereby maintenanceof the lock handle assembly is assured against tampering by unskilledpersons, but removable by a, skilledmechanic in the circumstancesrequirin'gthe'disassembly of the lock.

More snecieially, the invention comprises in combination with a lock orother connector mechanism per se anda square or other polygonallyconfigurated spindle, of a ,handle resiliently connected with one end ofsuch spindle, the opposite end of the spindle being provided withpin-receiving slots of predetermined longitudinal dimension, andaretaining pin having relatively large and small parts, the relativelysmall part of the pin being received within the stated pin-receivingslots of the spindle, the' relatively large part or parts of the pinservingrto lock the retaining pin in mechanical connection with thespindle of the naturereasonably proof against tampering by an unskilledperson, but disconnectable by a skilled person.

In preferred embodiments of the invention, the coil spring or equivalentresilient means is enclosed in a cylindrical sleeve which may beconnected with the knob either integrally or otherv.

wise Xedly in combination with the connection of the spindle of the lockwith the knob either by means of a cam follower associated with a pinpassing through the s indle or by means of a lost motion connectionbetween the spindle and the knob, ysuch cylindrical sleeve bearingwithin' 3 Claims. (Cl. 292-3-18) the cylindrical opening in the rose,whereby a free and easy working of the handle is attained in themovements of operating the lock. Such free and easy workingcharacteristic of the connection of the knob with the spindle'servesalso to compensate for any misalignment of the assembly of the handleper se and the lock per se, and also any inaccuracy in drilling ofopenings in the door in the installation of the door lock.

` The stated advantages are attained independently of the above referredto or other specific form of pin-connection of the knob or other handlewith respect to the spindle, for safeguarding against tampering.

Further features and objects of the invention will be more fullyunderstood from the following detailed description and the accompanyingdrawings, in which: t v Fig. 1 Ais an elevational view of a preferredembodiment of the improved door handle assembly, partly broken away inhorizontal central section to expose otherwise hidden parts.V This viewshows the parts in normal, i. e., unturned position.

Fig. 2 is a view similar to that of Fig. 1v but showing one handle andthe spindle and associated parts displacedtoward the right as viewed inthe figure. t Y

Fig. 3 is rarfragmentary exploded perspective view of a cam-providedrose andtherewith cooperating cam follower sleeve.

Fig. 4 is a fragmentary perspective view of the assembly of the'spindleand one of the'handles. Fig. 5 is a detail sectional view on line 5--5`of Fig. 4.

Fig. 6 isY a centralvertical sectional view' of 'another embodiment ofthe invention.

Fig. 'l is a central vertical sectional viewof another embodiment oi.the invention.

Fig. 8 is a central vertical sectional view of another embodiment of theinvention.

Referring to the preferred embodiments of the invention illustrated inrthe drawings, the im- 'provedA door handle assembly comprises the roofthe door, vmay have any desired exterior configuration forornamentation, but for the purposes of the present invention eachincludes a hollow formation I6 Which is received in the recesses I'I,I'I, formed at the opposite faces of the door, the stated perforation IIpassing centrally through such recesses I'I, I'I. Such recesses may havea circular` cross sectional conguration.

As shown in Figs. 1 and 2, the door handle assembly may include a knobI8 of conventional or other approved type at one side of the door and a.handle I9 oroperating member of rectilinear conguration at the`.opposite side .of the door. It is desirable that the rectilinearhandle I9 when in neutral position extend in a horizontal plane.v y

A rectilinearly extending handle may be employed also in lieu of theconventional 'circular knob I8 at the opposite sideof .the door.

In each instance, the knobor rectilinearlyextending handle comprises acylindricalsleeve, the sleeve of the knob-type of handle beingdesignated 2D and the sleeve of .therectilinearly extending handle I9being designated '21.

As shown in Figs. 1 and 2, thespindle :i8 is assembled with the knob{I`8 through the intermedi- @12V-iol :a .canrsleeve 22.which. hasat-.its one side diametrically disposed V-shap'ednotches '23., '23vand-:is connected at-.its oppositeside `to theknob VI8,.as by `formingits .face 24 convergingly tapered toA .conform .to the .like tapered.rusto-.conioal #face .25 of .the knob .part .lband .providing on theface` .24- .oppositel'y disposed spline-like projections 24a,24acreceived within. slots .I.8c, I`8c Iormedin theknob face 25,.see'Fig. 4, Such cam s1eeve.22.:co-acts withthepin 26 carredby.Gr.insertedf-in thespindle 1.0, whereby .the spindle `Illis securedrelative .to .the .body .ofthe knob .I.8. 'llo .efiect .such assembly,.the knob .I8 4is formed, as indicated above, of complementary parts,Illa, 1.8i)..a..fordingv when disassembled access: *.to the `stated'.cam :sleeve .and .itspin `and .to .the spindle.

The stated. vknob assembly .comprises further the cam sleeve follower21, which is .located within the. knob-.sleeve 20. .and has .an outer-circular periphery -slightly .less than. the innerV circular,peripheryof .the-sleeve .20.. VThe :cam sleeve Iollower has `a .centralsqnarelbore-Z'Ia .conforming to=..that `of the spindle VIll whichvpasses therethrough, see Fig. 3. The outward face VA'2lb ofthe.camsleeve follower .is ila-12.againstwhichone :end ofY the .expansilecoilspring -28 `abuts.; .the .opposite end of .such spring. abutsagainst .the Hat face a at the junction of the sleeve .2li with the ofthe-knob... The cam .sleeve .follower 21 is providedfat vits..inwardiace with `camming peaks 29 which cooperate. withy the Aoppostelydisposed :cam -elements .30., v3l), .formed .at theainner race .of -thebase-formation .I E .of =the :rose 1.4.; these :cam elements 30,-30`,..aresymmetricallydisposed with respect to the bore Ilia of thebase.. I6.

The .stated vcomponent. parts at. one .side of `the door areassembled.bythreading .thespring v28 .and thenvthe cam vfollower -sleeveYabout the-free end of the spindle 1.0, which-.is thereafter insertedthrough the opening .I.6a of the hollow base I6 of the rose I4, .thenthrough .the holein the .door and the. operating openingof the selectedlock I3; the free fend of the spindle is nowinserted .through.theopening -Ib ofthe 4.cylindrical base I:6=of. the roseV I 5.

Adjacent the free vend of the spindle I0 Aare formed-lopen ftransverseslots A3-I` for the reception YAoa retaining :pin-.32. which' is `oi?special construction. As shown in Figs. l and 2, such pin 3-2-.is

:forgeneral .I-shape, thatis to say, havinga central portion which isgreatly reduced as compared with its opposite end portions, the centralportion being disposed substantially symmetrically with the opposite endportions. Co-ordinated with such retaining pin 32, the slots 3l each hasa dimension longitudinally of the spindle I but slightly greater thanthe corresponding dimension of the larger end portions of the pin 32,for the purposes presently explained. Further associated with such pinand slotted spindle assembly is the collar 33 having a square bore 33acorresponding Lto .the outer periphery of the body of the 'spindle I'Uand a transverse bore 33h cor.. responding to and but slightly largerthan the peripheral configuration of the larger end portions of thepin32.

AThe'conrpletion of the assembly of the stated 'parts-may .be morereadily explained by reference :to Fig, 2, Ywhich 'illustrates the knobhandle subasseinbl-y. having .been pressed in the direction toward thedoor 4.2 as indicated by the arrow 34, `.thereby compressing the spring28, and whereby 'the free end ofthe spindle I0 is projected in thedirection-:of the arrow 34. In such position, the free end of thespindle inserted Within the open end ofthe-sleeve 2l of .theyhandlerl 9,then through the bore 33a of the collar 33,. the .collar being shiftedto locateits transverse bore 3319 Ain align- Vment ywith the registeringopenings V35 of lthe sleeve `of the handle L9, to venable the retaining.pin 32 tobe insertedthrough one 'ofsuch registering openings 35, thencethrough the .forepart of the-gbore. 33h of the'sleeve-33' and theselected Vslot 3| of the spindle I0, then through the .postpart ofthebore-33b andnallyinto theopposite opening i35 'of the .handle-sleeve.

Uponv releasing the pressure `on the knob I8, .the expansile-spring 28`returns the knob andthe .spindle and .the stated therewith associatedparts in direction opposite to that ofthe arrow3'4. In such.returnymovement the .assembly of the pin 32, `its `collar .33, -theregistering openings- 35, 35, 'of-the .handle sleeve 2| are broughtinwardly of the .rose .I5,f whereupon the handle.` assembl-yis .innormall relation.

It .isfobserved thatthe rose-I4 is shown provided with `points 36, .36,etc..fo.r .affording -forcible insertion into the-wood -or othermaterial of -the door I2, thus insuring permanenceV of positioning .ofits cam elements 3l), 30.. A similar manner of securement isl provided.for the' rose I5.

.Such .return `movement effects vthe important change` oflrelationsl'iip of `the pin 32 with respect to the yslot 3l Iof .thespindle through which the spin hastbeen insertedynamel-y that theshoulders betweenthe Ylarger end portions :and the smaller `.central.portion .of the pin 32 Aare `brought into -engagementwithlthe bodyofthe spindle adjacent .such.secured.lockingofthe pin .3-2 with respect`to .65

the spindle is .maintained .in .the'circumstance .that the .knobl be.pressed-toward the door, in which circumstance the lopposite-shouldersof the 4pin 32` engage `thebodyY of thespindle adjacent theoppositeedgesfof .the selected slot 3-I of the spindle.

The .above arrangement, it y-will now -be apparent, :precludes-thepossibilityof children or other Yunskilled -personsf'from .tampering`with? the lock handle yin-the 'effort-to disconnect the pin 32 fromythe-lock -handle and 1thus' disassemble 'the lock handle.-.;'IIowever,an expert'by experience is able to disconnect the pin 32 bycarefullyshifting the spindle III Vto locate the slot 3| in which the pin hasbeen inserted to position its side faces in substantial alignment withthe side faces of the larger end portions of .the pin, and then tampingthe pin toY remove the' same.

It is desirable to install and normally position the rectilinear handleI 9 of the lock handle in horizontal position, which objective isYattained by securing the rose I4 of the handle assembly to locate itscam elements 30, 30, in the vertical plane, as shown in Fig. 1, wherebythrough the mediation of the cam follower sleeve 21 and the spindle I0,and the assembly of the collar 33, pin 32 and the sleeve 2I, therectilinearly extending handle I9 assumes a horizontal position, and isrestored to such horizontal position after release when turned tooperate the lock.

If preferred, a rectilinearly extending handle, similar to the statedhandle I9, may be substituted for the knob type of handle I8, thesecurement of the inner end of the spindle with respect to suchrectilinearly extending handle being carried out similarly asillustrated and described with respect to the knob handle I8, that is tosay, to provide a sleeve such as the sleeve 20, camming sleeve 25,frusto-conically associated with such sleeve 20 and a pin 26 functioningwith the camming end of such sleeve 25.

From the above it is apparent that the invention comprises a lock handlesub-assembly inclusive of a sleeve secured to a handle, Whether of theknob type or of the rectilinearly extending type, a cam collar and a pintherefor, in combination with an expansile spring, a cam sleeve followerhaving cam peaks in cooperation with camming means affords resilientaction in the movement of turning the handle to operate the lock orother connector, the stated camming means functioning to increase theleverage of the force applied to the handle as the turning movement iscontinued. Such resiliency-provided movement pertains also in theoperation of the opposite handle, since the turning motion of thespindle is identical, irrespective of the end of the spindle to whichthe turning force is applied.

The biasing, and preferably resilient, means of the handle assemblyafforded by the expansile spring 23 functions to aiord an easy movementin the operation of the lock or connector, as well as to normallymaintain the retaining pin 32 in its locking relation of the operatingparts of the assembly.

In the embodiment shown in Fig. 6, the knob I8 is formed ofcomplementary parts IBa, I8b similarly as in the preceding embodiment;in the Fig. 6 embodiment the cam sleeve 22 is cast or otherwise formedintegrally with the knob part I8b and also with the cylindrical sleeve20.

In the Fig. 7 embodiment of the invention, the cam sleeve 22 isintegrally connected with the cylindrical sleeve 20; in thisconstruction, the knob I8 is of hollow formation, either integral or ofcomponent parts, and has a circular opening indicated at 3'I at itsinward side, the defining face of such opening 3l being provided withsuitable disconnecting means such asV threading mating with thethreading formed at the outer circular periphery 22a of the cam sleeve22. Y

In the construction of the embodiment illustrated in Fig. 8, the knob 38is integrally or other- Wise xedly secured to the cylindrical sleeve 20;

within the body of the knob is formed the recess 39 into which the endIllal of the spindle I0 projects. The perforation IIIb is formed in theend portion I 0a of the spindle through which projects the pin 4I), forconnecting the knob to the spindle I0. Such spindle extends through theperforation 4I formed in the body of the knob 38. As shown, suchconnection of the knob with the spindle may have a limited lost motion,aiorded by the relatively enlarged dimensions of the recess 39withrespect tothe dimensions of the pin 40 and the curved formation ofthe bottom of the recess 39. and corresponding curved tip of the endportion lila of the spindle. Such knob 38 may be unitary, or may beformed of component parts 38a, 38h, as shown, and connected together asa unit by the provision of the ring 42 screwthreadedly or otherwisedisconnectably connecting such component knob parts.

The parts of the embodiment illustrated in Figs. 6, 7 and 8, in commonwith those of the embodiment shown in Figs. 1 through 5, are designatedby like reference characters.

Pursuant to the embodiment typied by the several constructionsillustrated in Figs. 6, 7 and 8, the lock handle may be provided withany desired type of configuration of the knob or handle or other form ofmanually operating member.

I claim:

1. In a lock handle assembly including a spindle and handles secured atthe respective opposite ends of the spindle, the combination of apin-receiving opening adjacent an end of the spindle; a sleeve disposedat such end portion of the spindle, said sleeve being provided withoppositely disposed mutually registering openings; a pin havingshoulders formed by oppositely disposed end portions of relatively largedimension in the direction longitudinally ofthe spindle and a centralportion of relatively reduced dimension in the stated direction, thedimension of each pin-receiving n opening in the longitudinal directionof the spindl'e exceeding that of said larger end portions of the pin;and means for biasing the spindle in the direction of its length wherebythe pin is held in its receiving openings by engagement of its shoulderswith the body of the spindle.

2. The combination as deiined by claim 1 in which the pin-receivingopening is a slot open laterally of the spindle.

3. In a lock handle assembly including a spindle and handles secured atthe respective opposite ends of the spindle, the combination of apinreceiving opening adjacent one end of the spindle; a sleeve disposedat such end portion of the spindle, said sleeve being provided withoppositely disposed mutually registering openings; a pin having anintermediate portion which is slender relative to its opposite endportions, the said end portions of the pin being formed to substantiallymate with the respective openings in said sleeve, and the said slenderintermediate portion of the pin being formed to substantially registerwith said pin-receiving opening of the spindle, the said pin-receivingopening of the spindle conforming in shape with and being not less incrosssectional dimension than the said openings in the sleeve, said pinbeing disposed with its said end portions mating with the respectiveopenings in the sleeve and its said slender intermediate portionextending through the pin-receiving opening of the spindle; and meansnormally biasing the spindle in the direction of its length, whereby thepin is locked in its receiving openings by engagement of its said endportions with the spindle.

SAMUEL BARTLETT MoKENZIE.

(References on following page) fiileV of kthis patent:

Number Name Date McDonald July 18, 1916 Heinen Aug. 23, 1938 McKenzieDec. 30, 1941 Floraday Feb. '17, 1942 FOREIGN PATENTS `(Jaurdzry Date'Great Britain 1911 France Mar. 15, 1923.

